One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(5,6)(7,9)(8,10)(11,12)(14,17)(15,19)(21,22,26,24)(23,29,30,27)(25,32,33,28)(31,34,36,35)(5,7,10,12)(6,11,8,9)(13,14)(15,20)(16,17)(18,19)(23,30)(25,33)(27,29)(28,32)(6,8)(9,11)(13,14,16,17)(15,20,19,18)(21,23)(22,27)(24,29)(25,31)(26,30)(28,34)(32,35)(33,36)(1,2)(3,4)(5,8,10,6)(7,9,12,11)(13,14)(15,20)(16,17)(18,19)(21,24,26,22)(23,27,30,29)(25,32,33,28)(31,34,36,35)(5,9)(6,12)(7,8)(10,11)(13,15,16,19)(14,18,17,20)(21,25)(22,28)(23,31)(24,32)(26,33)(27,34)(29,35)(30,36)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.